package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    private DishService dishService;

    private DishFlavorService dishFlavorService;

    private CategoryService categoryService;

    @Autowired
    public DishController(DishService dishService) {
        this.dishService = dishService;
    }

    @Autowired
    public void setDishFlavorService(DishFlavorService dishFlavorService) {
        this.dishFlavorService = dishFlavorService;
    }

    @Autowired
    public void setCategoryService(CategoryService categoryService) {
        this.categoryService = categoryService;
    }

    /*
     * 新增菜品
     * */
    @PostMapping
    //DTO,即数据传输对象，应用于展示层与服务层之间的数据传输
    public R<String> dish(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    @GetMapping("/page")
    public R<Page> page(Integer page, Integer pageSize, String name) {
        //构造分页构造器
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        dishService.page(pageInfo, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            //根据ID查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());


        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /*
     * 根据ID查询菜品信息和对应的口味信息
     * */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    /*@GetMapping("/list")
    public R<List<Dish>> list(Dish dish){
        //查询条件对象
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为起售条件的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        return R.success(list);
    }*/

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {
        //查询条件对象
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //添加条件，查询状态为起售条件的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        //排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);
        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();

            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            Long dishId = item.getId();

            LambdaQueryWrapper<DishFlavor> queryWrapper1 = new LambdaQueryWrapper<>();
            queryWrapper1.eq(DishFlavor::getDishId, dishId);
            List<DishFlavor> flavors = dishFlavorService.list(queryWrapper1);
            dishDto.setFlavors(flavors);
            return dishDto;
        }).collect(Collectors.toList());
        return R.success(dishDtoList);
    }
}
